Valve-grinder.



C. L. PATTERSON.

VALVE GRINDER.

APPLICATION FILED FEB. 24. I915.

1,201,754. v Patented 0ct.17,1916.

CHARLES L. PATTERSON, OF WARREN, INDIANA.

VALVE-GRINDER.

I Specification of Letters Patent.

Patented Oct. 17, 1916.

Application filed February 24, 1915. Serial I'm-10,293.

To all whom it'may concern: 1

Be it known that I, CHARLES L. PATTER- SON, a citizen ofthe United States, residing at Warren, in the county of Huntington, State of Indiana, have invented certain new and useful Improvements in Valve-Grinders; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in valve grinders and particularly to devices for grinding the valves of automobile engines' either in the automobile or when the engineis removed therefrom.

Another object is to provide an improved device of this character by means of which the valve is rotated first in one direction, and then in the other, but slowly and gradually turned completely around in one direction.

Another object is to provide an improved device of this character in which the valve is intermittently lifted so as to prevent grooves being worn in the valve and seat as usually occurs when the valve is continuously curved in one direction.

A still further object of the invention is to provide an improved device of this character which can be moved up to an automobile and quickly and easily set into position to grind the valves of the engine.

A still further object is to provide an improved device of this character which is capable of supporting the engine removed from the automobile so that the valves can be ground. v o

Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawing.

In the drawing: Figure 1 is an elevation of my valve grinding device, Fig. 2 is a front elevation of the upper portion of the device, Fig. 3 is a top plan view of the upper portion of the device, Fig. t is a transverse section on the line H of Fig. 3, Fig. 5 is a horizontal sectional view of the device taken on the line 5-5 of Fig. 1, and Fig. 6 is a vertical sectional view on the line 6-6 of Fig. 3.

Referring particularly to the accompanying drawing, 10 represents a pair of short uprights and 11 a pair of longer uprights. Supported by the lower ends of the uprights is the platform 12, in which is mounted an electric motor 13. On the upper ends of the uprights 10 18 mounted a platform or table 1%, theother end being suitably supported by the intermediate portions of the uprights l l. Connecting the upper ends of the uprights 11 is a cross beam 15 which carries a bearing tube 16, said tube extending downwardly through a second bearing beam 17 disposed below the table 14. Vithin this bearing tube is disposed a vertical shaft 18, the lower end of which carries a belt wheel 19 driven from a smaller belt wheel 20 by the belt 20 on a transverse shaft 21 at the other end of the frame. A second belt wheel 22 is also mounted on the shaft 21 and is driven from the motor by the belt 23. On the upper end of the shaft 18 is a laterally swinging frame 2 1 to the outer end of which is hinged a second laterally swinging frame 25. The pivot bolt 26 which connects these two frames is provided at its upper end with a belt wheel 27 driven from the belt wheel 28 on the upper end of the shaft 18 by means of a belt 29.

This belt wheel 27 is provided with a crank 1 pin 30 to which is connected one end of a pitman rod 31. On the outer end of the frame 25 is'mounted a vertical shaft 32 on which is disposed a ratchet wheel 33. This ratchet wheel has an integrally formed vertical split sleeve 34 which is clamped to the shaft '32 by means of a clamp and screw 35. Loosely mounted on the. shaft 32 above and below the ratchet wheel respectively are the rock arms 36 and 37, their respective ends being connected by the bolts 38 which carry pawls 39 engaging with the teeth of the ratchet wheel. Springs d0 connected to the pawls and to the plates normally urge the pawls into engagement with the teeth. On the upper side of the frame 25 below the lower plate 37 is a roller 41 which is adapted to be engaged by the lower plate in part of its rocking movement to elevate the said plate for a purpose which will be herelnafter set forth. One'of the bolts 38 extends above the uppermost rock arm 36, and receives pivot ally tliereonthe other end of the pitman rod 31. Also mounted on the frame 25 is a plate -12 which is formed with a curved finger 43 extending concentrically outward of one side of the ratchet wheel in position to engage with one of the pawls 39 and move the same out of engagement with the ratchet wheel.

At the outer extremity of the frame 25 is mounted a vertical rod 4-1 which is adapted to rest on a portion of the engine frame to gripping tool 33.

support the frame 25 while the device is in operation. The lower end of the shaft 32 is formed to receive the upper end of a valve By means of the split sleeve and set screw 35, the shaft 32 can be adjusted vertically for engine cylinders of different heights;

Particular attention is calledto the fact that by reason of the swinging movements of the frames 24; and 25 on the shafts l8 and 26, the device can be brought into position to grind the valves of the engine whether the l 1 engine remains in the automobile, is removed Copies 01 this patent may be obtained for movable therewith, rock arms loosely mounted on the element above and below the ratchet wheel, and extending beyond both sides thereof, connections between the ends of the arms, means for rocking the arms, springpressed pawls pivotally carried by the said connection of the arms and engaging with the ratchet wheel whereby the said element will be rotated first in one direction and then in the other, and a curved member extending partially around the periphery of the ratchet wheel, for releasing engagement with one of the pawls during a part of the rocking movement of the arms in one direction whereby the element will be rotated farther in one direction than in the other.

In testimony whereof, I afliX my signature, in the presence of two witnesses.

I CHARLES L. PATTERSON. Witnesses:

WILLIAM V. ROGERS, JOHN I. WILLIAMS.

five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

